Combined detection method based on active code channel selection in time division synchronous code division multiple access receiver

The invention discloses a time division synchronous code division multiple access receiver. The time division synchronous code division multiple access receiver is characterized in that the time division synchronous code division multiple access receiver comprises a combined detector, wherein the combined detector receives an input signal from a transceiver, and uses active code selection to analyze the input signal to determine whether co-frequency interference of one or more adjacent cells outside a service cell exists. The combined detector assigns a first matrix which comprises required multiple active code channels through the active code selection so as to construct a channel matrix, wherein the multiple active code channels comprise all or parts of active code channels in the service cell and/or all or parts of active code channels corresponding to one or more adjacent cells. One of the advantages of the method provided by the invention is that a balance between the receiving performance of the receive